Last official estimated population of Marshall County was 33,060 (year 2014)[1]. This was 0.01% of total US population and 1.8% of total West Virginia state population. Area of Marshall County is 312.2 mi² (=808.5 km²), in this year population density was 105.91 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Marshall County population in 2025 would be 32,931 [0].
Historical population of Marshall County for period 1840-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1840-1850] +3.87 %/yr
[1850-1860] +2.52 %/yr
[1860-1870] +1.4 %/yr
[1870-1880] +2.35 %/yr
[1880-1890] +0.96 %/yr
[1890-1900] +2.46 %/yr
[1900-1910] +2.05 %/yr
[1910-1920] +0.39 %/yr
[1920-1930] +1.69 %/yr
[1930-1940] +0.09 %/yr
[1940-1950] -0.85 %/yr
[1950-1960] +0.31 %/yr
[1960-1970] -0.12 %/yr
[1970-1980] +1.02 %/yr
[1980-1990] -1.07 %/yr
[1990-2000] -0.5 %/yr
[2000-2005] -0.8 %/yr
[2005-2010] -0.6 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Marshall County? Visit this page: Settlements in Marshall County, WV
Population of Marshall County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 920 | 785 | 1,705 |
| 5 to 9 | 903 | 871 | 1,774 |
| 10 to 14 | 944 | 939 | 1,883 |
| 15 to 19 | 900 | 871 | 1,771 |
| 20 to 24 | 931 | 913 | 1,844 |
| 25 to 29 | 944 | 824 | 1,768 |
| 30 to 34 | 865 | 865 | 1,730 |
| 35 to 39 | 909 | 886 | 1,795 |
| 40 to 44 | 1066 | 1019 | 2,085 |
| 45 to 49 | 1064 | 1030 | 2,094 |
| 50 to 54 | 1182 | 1231 | 2,413 |
| 55 to 59 | 1300 | 1328 | 2,628 |
| 60 to 64 | 1252 | 1329 | 2,581 |
| 65 to 69 | 1075 | 1154 | 2,229 |
| 70 to 74 | 669 | 758 | 1,427 |
| 75 to 79 | 469 | 661 | 1,130 |
| 80 to 84 | 290 | 444 | 734 |
| 85+ | 307 | 518 | 825 |
Marshall County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| NH | 15842 | 16243 | 32,085 |
| WAC | 15753 | 16217 | 31,970 |
| NHWAC | 15617 | 16047 | 31,664 |
| WA | 15587 | 16056 | 31,643 |
| NHWA | 15458 | 15896 | 31,354 |
| BAC | 226 | 175 | 401 |
| NHBAC | 217 | 163 | 380 |
| TOM | 171 | 166 | 337 |
| H | 148 | 183 | 331 |
| NHTOM | 164 | 156 | 320 |
| HWAC | 136 | 170 | 306 |
| HWA | 129 | 160 | 289 |
| BA | 139 | 96 | 235 |
| NHBA | 134 | 87 | 221 |
| IAC | 104 | 105 | 209 |
| NHIAC | 94 | 100 | 194 |
| AAC | 82 | 101 | 183 |
| NHAAC | 80 | 93 | 173 |
| AA | 61 | 72 | 133 |
| NHAA | 61 | 70 | 131 |
| IA | 30 | 36 | 66 |
| NHIA | 23 | 34 | 57 |
| HBAC | 9 | 12 | 21 |
| HTOM | 7 | 10 | 17 |
| HIAC | 10 | 5 | 15 |
| HBA | 5 | 9 | 14 |
| NAC | 8 | 5 | 13 |
| NHNAC | 7 | 4 | 11 |
| HAAC | 2 | 8 | 10 |
| HIA | 7 | 2 | 9 |
| NA | 2 | 0 | 2 |
| NHNA | 2 | 0 | 2 |
| HNAC | 1 | 1 | 2 |
| HAA | 0 | 2 | 2 |
| HNA | 0 | 0 | 0 |
• Washington County population
32.6 mi, 
42°
• Monongalia County
35.9 mi, 
115°
• Belmont County
19.3 mi, 
305°
• Marion County
33.1 mi, 
136°
• Ohio County
17.1 mi, 
9°
• Greene County
23.7 mi, 
91°
• Brooke County
29.3 mi, 9°
• Wetzel County
17.7 mi, 
172°
• Monroe County
24 mi, 
248°
• Tyler County
29 mi, 
202°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Ohio West Virginia Notes
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